Second placed athlete has risen (6,2)
I believe the answer is:
runner up
'second' is the definition.
(I've seen this before)
'placed athlete has risen' is the wordplay.
'placed athlete' becomes 'runner' (runner is a kind of athlete. I am not sure about the 'placed' bit.).
'has' is a charade indicator (letters next to each other).
'risen' becomes 'up' (similar in meaning).
'runner'+'up'='RUNNER-UP'
Can you help me to learn more?
(Other definitions for runner up that I've seen before include "One gets silver" , "Second" .)